3851-64-7

Upstream product

• 344-07-0 1-chloro-2,3,4,5,6-pentafluorobenzene 
• 873-55-2 sodium benzenesulfonate 
• 827-15-6 1,2,3,4,5-pentafluoro-6-iodobenzene 
• 2712-34-7 1,4-bis(phenylthio)-2,3,5,6-tetrafluorobenzene 

Relevant academic research and scientific papers

LADDER POLYMERS WITH INTRINSIC MICROPOROSITY AND PROCESS FOR PRODUCTION THEREOF

A polymer of formula (I): where: n is an integer from 10 to 5,000; m is an integer from 10 to 5,000; Ar1 and Ar3 are the same or different and are residues derived from a tetra-hydroxy aromatic monomer, the tetra-hydroxy aromatic monomer being wherein R i

REACTION OF PERFLUOROARYL HALIDES WITH REDUCED SPECIES OF SULFUR DIOXIDE (HSO2(-), SO2(2-), S2O4(2-))

Rongalite (sodium hydroxymethanesulfinate), sodium dithionite, and aminoiminomethanesulfinic acid (AIMS) reduce perfluoroiodobenzene in N,N-dimethylformamide to pentafluorobenzene.In the presence of added D2O or CH3OD, deuteriopentafluorobenzene is formed. p-Dinitrobenzene does not inhibit the reduction, and addition of norbonene did not result in trapping of any radical intermediates.Reaction of pentafluoroiodobenzene with sodium benzenesulfinate gave 1,4-dibenzenesulfonyl-2,3,5,6-tetrafluorobenzene.A halophilic attack mechanism is suggested for the reduction reaction.Chloropentafluorobenzene did not react under the same conditions as the iodide; at elevated temperatures in the presence of sodium bicarbonate and Rongalite the fluorine para to the chlorine was reduced.Reduction of the chloride to pentafluorobenzene is minor.In the absence of bicarbonate, the chloride gave also a mixture of sulfides believed to be derived from decomposition of the Rongalite to hydrogen sulfide.Some reaction with dimethylamine from decomposition of DMF also is observed.